drivers/net/usb/cdc_ether.c

   1 /*
   2  * CDC Ethernet based networking peripherals
   3  * Copyright (C) 2003-2005 by David Brownell
   4  * Copyright (C) 2006 by Ole Andre Vadla Ravnas (ActiveSync)
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 // #define      DEBUG                   // error path messages, extra info
  21 // #define      VERBOSE                 // more; success messages
  22
  23 #include <linux/module.h>
  24 #include <linux/netdevice.h>
  25 #include <linux/etherdevice.h>
  26 #include <linux/ethtool.h>
  27 #include <linux/workqueue.h>
  28 #include <linux/mii.h>
  29 #include <linux/usb.h>
  30 #include <linux/usb/cdc.h>
  31 #include <linux/usb/usbnet.h>
  32
  33
  34 #if IS_ENABLED(CONFIG_USB_NET_RNDIS_HOST)
  35
  36 static int is_rndis(struct usb_interface_descriptor *desc)
  37 {
  38         return (desc->bInterfaceClass == USB_CLASS_COMM &&
  39                 desc->bInterfaceSubClass == 2 &&
  40                 desc->bInterfaceProtocol == 0xff);
  41 }
  42
  43 static int is_activesync(struct usb_interface_descriptor *desc)
  44 {
  45         return (desc->bInterfaceClass == USB_CLASS_MISC &&
  46                 desc->bInterfaceSubClass == 1 &&
  47                 desc->bInterfaceProtocol == 1);
  48 }
  49
  50 static int is_wireless_rndis(struct usb_interface_descriptor *desc)
  51 {
  52         return (desc->bInterfaceClass == USB_CLASS_WIRELESS_CONTROLLER &&
  53                 desc->bInterfaceSubClass == 1 &&
  54                 desc->bInterfaceProtocol == 3);
  55 }
  56
  57 #else
  58
  59 #define is_rndis(desc)          0
  60 #define is_activesync(desc)     0
  61 #define is_wireless_rndis(desc) 0
  62
  63 #endif
  64
  65 static const u8 mbm_guid[16] = {
  66         0xa3, 0x17, 0xa8, 0x8b, 0x04, 0x5e, 0x4f, 0x01,
  67         0xa6, 0x07, 0xc0, 0xff, 0xcb, 0x7e, 0x39, 0x2a,
  68 };
  69
  70 static void usbnet_cdc_update_filter(struct usbnet *dev)
  71 {
  72         struct cdc_state        *info = (void *) &dev->data;
  73         struct usb_interface    *intf = info->control;
  74
  75         u16 cdc_filter =
  76             USB_CDC_PACKET_TYPE_ALL_MULTICAST | USB_CDC_PACKET_TYPE_DIRECTED |
  77             USB_CDC_PACKET_TYPE_BROADCAST;
  78
  79         /* FIXME cdc-ether has some multicast code too, though it complains
  80          * in routine cases.  info->ether describes the multicast support.
  81          * Implement that here, manipulating the cdc filter as needed.
  82          */
  83
  84         usb_control_msg(dev->udev,
  85                         usb_sndctrlpipe(dev->udev, 0),
  86                         USB_CDC_SET_ETHERNET_PACKET_FILTER,
  87                         USB_TYPE_CLASS | USB_RECIP_INTERFACE,
  88                         cdc_filter,
  89                         intf->cur_altsetting->desc.bInterfaceNumber,
  90                         NULL,
  91                         0,
  92                         USB_CTRL_SET_TIMEOUT
  93                 );
  94 }
  95
  96 /* probes control interface, claims data interface, collects the bulk
  97  * endpoints, activates data interface (if needed), maybe sets MTU.
  98  * all pure cdc, except for certain firmware workarounds, and knowing
  99  * that rndis uses one different rule.
 100  */
 101 int usbnet_generic_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
 102 {
 103         u8                              *buf = intf->cur_altsetting->extra;
 104         int                             len = intf->cur_altsetting->extralen;
 105         struct usb_interface_descriptor *d;
 106         struct cdc_state                *info = (void *) &dev->data;
 107         int                             status;
 108         int                             rndis;
 109         bool                            android_rndis_quirk = false;
 110         struct usb_driver               *driver = driver_of(intf);
 111         struct usb_cdc_mdlm_desc        *desc = NULL;
 112         struct usb_cdc_mdlm_detail_desc *detail = NULL;
 113
 114         if (sizeof(dev->data) < sizeof(*info))
 115                 return -EDOM;
 116
 117         /* expect strict spec conformance for the descriptors, but
 118          * cope with firmware which stores them in the wrong place
 119          */
 120         if (len == 0 && dev->udev->actconfig->extralen) {
 121                 /* Motorola SB4100 (and others: Brad Hards says it's
 122                  * from a Broadcom design) put CDC descriptors here
 123                  */
 124                 buf = dev->udev->actconfig->extra;
 125                 len = dev->udev->actconfig->extralen;
 126                 dev_dbg(&intf->dev, "CDC descriptors on config\n");
 127         }
 128
 129         /* Maybe CDC descriptors are after the endpoint?  This bug has
 130          * been seen on some 2Wire Inc RNDIS-ish products.
 131          */
 132         if (len == 0) {
 133                 struct usb_host_endpoint        *hep;
 134
 135                 hep = intf->cur_altsetting->endpoint;
 136                 if (hep) {
 137                         buf = hep->extra;
 138                         len = hep->extralen;
 139                 }
 140                 if (len)
 141                         dev_dbg(&intf->dev,
 142                                 "CDC descriptors on endpoint\n");
 143         }
 144
 145         /* this assumes that if there's a non-RNDIS vendor variant
 146          * of cdc-acm, it'll fail RNDIS requests cleanly.
 147          */
 148         rndis = (is_rndis(&intf->cur_altsetting->desc) ||
 149                  is_activesync(&intf->cur_altsetting->desc) ||
 150                  is_wireless_rndis(&intf->cur_altsetting->desc));
 151
 152         memset(info, 0, sizeof(*info));
 153         info->control = intf;
 154         while (len > 3) {
 155                 if (buf[1] != USB_DT_CS_INTERFACE)
 156                         goto next_desc;
 157
 158                 /* use bDescriptorSubType to identify the CDC descriptors.
 159                  * We expect devices with CDC header and union descriptors.
 160                  * For CDC Ethernet we need the ethernet descriptor.
 161                  * For RNDIS, ignore two (pointless) CDC modem descriptors
 162                  * in favor of a complicated OID-based RPC scheme doing what
 163                  * CDC Ethernet achieves with a simple descriptor.
 164                  */
 165                 switch (buf[2]) {
 166                 case USB_CDC_HEADER_TYPE:
 167                         if (info->header) {
 168                                 dev_dbg(&intf->dev, "extra CDC header\n");
 169                                 goto bad_desc;
 170                         }
 171                         info->header = (void *) buf;
 172                         if (info->header->bLength != sizeof(*info->header)) {
 173                                 dev_dbg(&intf->dev, "CDC header len %u\n",
 174                                         info->header->bLength);
 175                                 goto bad_desc;
 176                         }
 177                         break;
 178                 case USB_CDC_ACM_TYPE:
 179                         /* paranoia:  disambiguate a "real" vendor-specific
 180                          * modem interface from an RNDIS non-modem.
 181                          */
 182                         if (rndis) {
 183                                 struct usb_cdc_acm_descriptor *acm;
 184
 185                                 acm = (void *) buf;
 186                                 if (acm->bmCapabilities) {
 187                                         dev_dbg(&intf->dev,
 188                                                 "ACM capabilities %02x, "
 189                                                 "not really RNDIS?\n",
 190                                                 acm->bmCapabilities);
 191                                         goto bad_desc;
 192                                 }
 193                         }
 194                         break;
 195                 case USB_CDC_UNION_TYPE:
 196                         if (info->u) {
 197                                 dev_dbg(&intf->dev, "extra CDC union\n");
 198                                 goto bad_desc;
 199                         }
 200                         info->u = (void *) buf;
 201                         if (info->u->bLength != sizeof(*info->u)) {
 202                                 dev_dbg(&intf->dev, "CDC union len %u\n",
 203                                         info->u->bLength);
 204                                 goto bad_desc;
 205                         }
 206
 207                         /* we need a master/control interface (what we're
 208                          * probed with) and a slave/data interface; union
 209                          * descriptors sort this all out.
 210                          */
 211                         info->control = usb_ifnum_to_if(dev->udev,
 212                                                 info->u->bMasterInterface0);
 213                         info->data = usb_ifnum_to_if(dev->udev,
 214                                                 info->u->bSlaveInterface0);
 215                         if (!info->control || !info->data) {
 216                                 dev_dbg(&intf->dev,
 217                                         "master #%u/%p slave #%u/%p\n",
 218                                         info->u->bMasterInterface0,
 219                                         info->control,
 220                                         info->u->bSlaveInterface0,
 221                                         info->data);
 222                                 /* fall back to hard-wiring for RNDIS */
 223                                 if (rndis) {
 224                                         android_rndis_quirk = true;
 225                                         goto next_desc;
 226                                 }
 227                                 goto bad_desc;
 228                         }
 229                         if (info->control != intf) {
 230                                 dev_dbg(&intf->dev, "bogus CDC Union\n");
 231                                 /* Ambit USB Cable Modem (and maybe others)
 232                                  * interchanges master and slave interface.
 233                                  */
 234                                 if (info->data == intf) {
 235                                         info->data = info->control;
 236                                         info->control = intf;
 237                                 } else
 238                                         goto bad_desc;
 239                         }
 240
 241                         /* some devices merge these - skip class check */
 242                         if (info->control == info->data)
 243                                 goto next_desc;
 244
 245                         /* a data interface altsetting does the real i/o */
 246                         d = &info->data->cur_altsetting->desc;
 247                         if (d->bInterfaceClass != USB_CLASS_CDC_DATA) {
 248                                 dev_dbg(&intf->dev, "slave class %u\n",
 249                                         d->bInterfaceClass);
 250                                 goto bad_desc;
 251                         }
 252                         break;
 253                 case USB_CDC_ETHERNET_TYPE:
 254                         if (info->ether) {
 255                                 dev_dbg(&intf->dev, "extra CDC ether\n");
 256                                 goto bad_desc;
 257                         }
 258                         info->ether = (void *) buf;
 259                         if (info->ether->bLength != sizeof(*info->ether)) {
 260                                 dev_dbg(&intf->dev, "CDC ether len %u\n",
 261                                         info->ether->bLength);
 262                                 goto bad_desc;
 263                         }
 264                         dev->hard_mtu = le16_to_cpu(
 265                                                 info->ether->wMaxSegmentSize);
 266                         /* because of Zaurus, we may be ignoring the host
 267                          * side link address we were given.
 268                          */
 269                         break;
 270                 case USB_CDC_MDLM_TYPE:
 271                         if (desc) {
 272                                 dev_dbg(&intf->dev, "extra MDLM descriptor\n");
 273                                 goto bad_desc;
 274                         }
 275
 276                         desc = (void *)buf;
 277
 278                         if (desc->bLength != sizeof(*desc))
 279                                 goto bad_desc;
 280
 281                         if (memcmp(&desc->bGUID, mbm_guid, 16))
 282                                 goto bad_desc;
 283                         break;
 284                 case USB_CDC_MDLM_DETAIL_TYPE:
 285                         if (detail) {
 286                                 dev_dbg(&intf->dev, "extra MDLM detail descriptor\n");
 287                                 goto bad_desc;
 288                         }
 289
 290                         detail = (void *)buf;
 291
 292                         if (detail->bGuidDescriptorType == 0) {
 293                                 if (detail->bLength < (sizeof(*detail) + 1))
 294                                         goto bad_desc;
 295                         } else
 296                                 goto bad_desc;
 297                         break;
 298                 }
 299 next_desc:
 300                 len -= buf[0];  /* bLength */
 301                 buf += buf[0];
 302         }
 303
 304         /* Microsoft ActiveSync based and some regular RNDIS devices lack the
 305          * CDC descriptors, so we'll hard-wire the interfaces and not check
 306          * for descriptors.
 307          *
 308          * Some Android RNDIS devices have a CDC Union descriptor pointing
 309          * to non-existing interfaces.  Ignore that and attempt the same
 310          * hard-wired 0 and 1 interfaces.
 311          */
 312         if (rndis && (!info->u || android_rndis_quirk)) {
 313                 info->control = usb_ifnum_to_if(dev->udev, 0);
 314                 info->data = usb_ifnum_to_if(dev->udev, 1);
 315                 if (!info->control || !info->data || info->control != intf) {
 316                         dev_dbg(&intf->dev,
 317                                 "rndis: master #0/%p slave #1/%p\n",
 318                                 info->control,
 319                                 info->data);
 320                         goto bad_desc;
 321                 }
 322
 323         } else if (!info->header || !info->u || (!rndis && !info->ether)) {
 324                 dev_dbg(&intf->dev, "missing cdc %s%s%sdescriptor\n",
 325                         info->header ? "" : "header ",
 326                         info->u ? "" : "union ",
 327                         info->ether ? "" : "ether ");
 328                 goto bad_desc;
 329         }
 330
 331         /* claim data interface and set it up ... with side effects.
 332          * network traffic can't flow until an altsetting is enabled.
 333          */
 334         if (info->data != info->control) {
 335                 status = usb_driver_claim_interface(driver, info->data, dev);
 336                 if (status < 0)
 337                         return status;
 338         }
 339         status = usbnet_get_endpoints(dev, info->data);
 340         if (status < 0) {
 341                 /* ensure immediate exit from usbnet_disconnect */
 342                 usb_set_intfdata(info->data, NULL);
 343                 if (info->data != info->control)
 344                         usb_driver_release_interface(driver, info->data);
 345                 return status;
 346         }
 347
 348         /* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */
 349         if (info->data != info->control)
 350                 dev->status = NULL;
 351         if (info->control->cur_altsetting->desc.bNumEndpoints == 1) {
 352                 struct usb_endpoint_descriptor  *desc;
 353
 354                 dev->status = &info->control->cur_altsetting->endpoint [0];
 355                 desc = &dev->status->desc;
 356                 if (!usb_endpoint_is_int_in(desc) ||
 357                     (le16_to_cpu(desc->wMaxPacketSize)
 358                      < sizeof(struct usb_cdc_notification)) ||
 359                     !desc->bInterval) {
 360                         dev_dbg(&intf->dev, "bad notification endpoint\n");
 361                         dev->status = NULL;
 362                 }
 363         }
 364         if (rndis && !dev->status) {
 365                 dev_dbg(&intf->dev, "missing RNDIS status endpoint\n");
 366                 usb_set_intfdata(info->data, NULL);
 367                 usb_driver_release_interface(driver, info->data);
 368                 return -ENODEV;
 369         }
 370
 371         /* Some devices don't initialise properly. In particular
 372          * the packet filter is not reset. There are devices that
 373          * don't do reset all the way. So the packet filter should
 374          * be set to a sane initial value.
 375          */
 376         usbnet_cdc_update_filter(dev);
 377
 378         return 0;
 379
 380 bad_desc:
 381         dev_info(&dev->udev->dev, "bad CDC descriptors\n");
 382         return -ENODEV;
 383 }
 384 EXPORT_SYMBOL_GPL(usbnet_generic_cdc_bind);
 385
 386 void usbnet_cdc_unbind(struct usbnet *dev, struct usb_interface *intf)
 387 {
 388         struct cdc_state                *info = (void *) &dev->data;
 389         struct usb_driver               *driver = driver_of(intf);
 390
 391         /* combined interface - nothing  to do */
 392         if (info->data == info->control)
 393                 return;
 394
 395         /* disconnect master --> disconnect slave */
 396         if (intf == info->control && info->data) {
 397                 /* ensure immediate exit from usbnet_disconnect */
 398                 usb_set_intfdata(info->data, NULL);
 399                 usb_driver_release_interface(driver, info->data);
 400                 info->data = NULL;
 401         }
 402
 403         /* and vice versa (just in case) */
 404         else if (intf == info->data && info->control) {
 405                 /* ensure immediate exit from usbnet_disconnect */
 406                 usb_set_intfdata(info->control, NULL);
 407                 usb_driver_release_interface(driver, info->control);
 408                 info->control = NULL;
 409         }
 410 }
 411 EXPORT_SYMBOL_GPL(usbnet_cdc_unbind);
 412
 413 /* Communications Device Class, Ethernet Control model
 414  *
 415  * Takes two interfaces.  The DATA interface is inactive till an altsetting
 416  * is selected.  Configuration data includes class descriptors.  There's
 417  * an optional status endpoint on the control interface.
 418  *
 419  * This should interop with whatever the 2.4 "CDCEther.c" driver
 420  * (by Brad Hards) talked with, with more functionality.
 421  */
 422
 423 static void dumpspeed(struct usbnet *dev, __le32 *speeds)
 424 {
 425         netif_info(dev, timer, dev->net,
 426                    "link speeds: %u kbps up, %u kbps down\n",
 427                    __le32_to_cpu(speeds[0]) / 1000,
 428                    __le32_to_cpu(speeds[1]) / 1000);
 429 }
 430
 431 void usbnet_cdc_status(struct usbnet *dev, struct urb *urb)
 432 {
 433         struct usb_cdc_notification     *event;
 434
 435         if (urb->actual_length < sizeof(*event))
 436                 return;
 437
 438         /* SPEED_CHANGE can get split into two 8-byte packets */
 439         if (test_and_clear_bit(EVENT_STS_SPLIT, &dev->flags)) {
 440                 dumpspeed(dev, (__le32 *) urb->transfer_buffer);
 441                 return;
 442         }
 443
 444         event = urb->transfer_buffer;
 445         switch (event->bNotificationType) {
 446         case USB_CDC_NOTIFY_NETWORK_CONNECTION:
 447                 netif_dbg(dev, timer, dev->net, "CDC: carrier %s\n",
 448                           event->wValue ? "on" : "off");
 449                 usbnet_link_change(dev, !!event->wValue, 0);
 450                 break;
 451         case USB_CDC_NOTIFY_SPEED_CHANGE:       /* tx/rx rates */
 452                 netif_dbg(dev, timer, dev->net, "CDC: speed change (len %d)\n",
 453                           urb->actual_length);
 454                 if (urb->actual_length != (sizeof(*event) + 8))
 455                         set_bit(EVENT_STS_SPLIT, &dev->flags);
 456                 else
 457                         dumpspeed(dev, (__le32 *) &event[1]);
 458                 break;
 459         /* USB_CDC_NOTIFY_RESPONSE_AVAILABLE can happen too (e.g. RNDIS),
 460          * but there are no standard formats for the response data.
 461          */
 462         default:
 463                 netdev_err(dev->net, "CDC: unexpected notification %02x!\n",
 464                            event->bNotificationType);
 465                 break;
 466         }
 467 }
 468 EXPORT_SYMBOL_GPL(usbnet_cdc_status);
 469
 470 int usbnet_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
 471 {
 472         int                             status;
 473         struct cdc_state                *info = (void *) &dev->data;
 474
 475         BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data)
 476                         < sizeof(struct cdc_state)));
 477
 478         status = usbnet_generic_cdc_bind(dev, intf);
 479         if (status < 0)
 480                 return status;
 481
 482         status = usbnet_get_ethernet_addr(dev, info->ether->iMACAddress);
 483         if (status < 0) {
 484                 usb_set_intfdata(info->data, NULL);
 485                 usb_driver_release_interface(driver_of(intf), info->data);
 486                 return status;
 487         }
 488
 489         return 0;
 490 }
 491 EXPORT_SYMBOL_GPL(usbnet_cdc_bind);
 492
 493 static const struct driver_info cdc_info = {
 494         .description =  "CDC Ethernet Device",
 495         .flags =        FLAG_ETHER | FLAG_POINTTOPOINT,
 496         .bind =         usbnet_cdc_bind,
 497         .unbind =       usbnet_cdc_unbind,
 498         .status =       usbnet_cdc_status,
 499         .manage_power = usbnet_manage_power,
 500 };
 501
 502 static const struct driver_info wwan_info = {
 503         .description =  "Mobile Broadband Network Device",
 504         .flags =        FLAG_WWAN,
 505         .bind =         usbnet_cdc_bind,
 506         .unbind =       usbnet_cdc_unbind,
 507         .status =       usbnet_cdc_status,
 508         .manage_power = usbnet_manage_power,
 509 };
 510
 511 /*-------------------------------------------------------------------------*/
 512
 513 #define HUAWEI_VENDOR_ID        0x12D1
 514 #define NOVATEL_VENDOR_ID       0x1410
 515 #define ZTE_VENDOR_ID           0x19D2
 516 #define DELL_VENDOR_ID          0x413C
 517 #define REALTEK_VENDOR_ID       0x0bda
 518 #define SAMSUNG_VENDOR_ID       0x04e8
 519
 520 static const struct usb_device_id       products[] = {
 521 /* BLACKLIST !!
 522  *
 523  * First blacklist any products that are egregiously nonconformant
 524  * with the CDC Ethernet specs.  Minor braindamage we cope with; when
 525  * they're not even trying, needing a separate driver is only the first
 526  * of the differences to show up.
 527  */
 528
 529 #define ZAURUS_MASTER_INTERFACE \
 530         .bInterfaceClass        = USB_CLASS_COMM, \
 531         .bInterfaceSubClass     = USB_CDC_SUBCLASS_ETHERNET, \
 532         .bInterfaceProtocol     = USB_CDC_PROTO_NONE
 533
 534 /* SA-1100 based Sharp Zaurus ("collie"), or compatible;
 535  * wire-incompatible with true CDC Ethernet implementations.
 536  * (And, it seems, needlessly so...)
 537  */
 538 {
 539         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 540                           | USB_DEVICE_ID_MATCH_DEVICE,
 541         .idVendor               = 0x04DD,
 542         .idProduct              = 0x8004,
 543         ZAURUS_MASTER_INTERFACE,
 544         .driver_info            = 0,
 545 },
 546
 547 /* PXA-25x based Sharp Zaurii.  Note that it seems some of these
 548  * (later models especially) may have shipped only with firmware
 549  * advertising false "CDC MDLM" compatibility ... but we're not
 550  * clear which models did that, so for now let's assume the worst.
 551  */
 552 {
 553         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 554                           | USB_DEVICE_ID_MATCH_DEVICE,
 555         .idVendor               = 0x04DD,
 556         .idProduct              = 0x8005,       /* A-300 */
 557         ZAURUS_MASTER_INTERFACE,
 558         .driver_info            = 0,
 559 }, {
 560         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 561                           | USB_DEVICE_ID_MATCH_DEVICE,
 562         .idVendor               = 0x04DD,
 563         .idProduct              = 0x8006,       /* B-500/SL-5600 */
 564         ZAURUS_MASTER_INTERFACE,
 565         .driver_info            = 0,
 566 }, {
 567         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 568                           | USB_DEVICE_ID_MATCH_DEVICE,
 569         .idVendor               = 0x04DD,
 570         .idProduct              = 0x8007,       /* C-700 */
 571         ZAURUS_MASTER_INTERFACE,
 572         .driver_info            = 0,
 573 }, {
 574         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 575                  | USB_DEVICE_ID_MATCH_DEVICE,
 576         .idVendor               = 0x04DD,
 577         .idProduct              = 0x9031,       /* C-750 C-760 */
 578         ZAURUS_MASTER_INTERFACE,
 579         .driver_info            = 0,
 580 }, {
 581         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 582                  | USB_DEVICE_ID_MATCH_DEVICE,
 583         .idVendor               = 0x04DD,
 584         .idProduct              = 0x9032,       /* SL-6000 */
 585         ZAURUS_MASTER_INTERFACE,
 586         .driver_info            = 0,
 587 }, {
 588         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 589                  | USB_DEVICE_ID_MATCH_DEVICE,
 590         .idVendor               = 0x04DD,
 591         /* reported with some C860 units */
 592         .idProduct              = 0x9050,       /* C-860 */
 593         ZAURUS_MASTER_INTERFACE,
 594         .driver_info            = 0,
 595 },
 596
 597 /* Olympus has some models with a Zaurus-compatible option.
 598  * R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
 599  */
 600 {
 601         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
 602                  | USB_DEVICE_ID_MATCH_DEVICE,
 603         .idVendor               = 0x07B4,
 604         .idProduct              = 0x0F02,       /* R-1000 */
 605         ZAURUS_MASTER_INTERFACE,
 606         .driver_info            = 0,
 607 },
 608
 609 /* LG Electronics VL600 wants additional headers on every frame */
 610 {
 611         USB_DEVICE_AND_INTERFACE_INFO(0x1004, 0x61aa, USB_CLASS_COMM,
 612                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 613         .driver_info = 0,
 614 },
 615
 616 /* Logitech Harmony 900 - uses the pseudo-MDLM (BLAN) driver */
 617 {
 618         USB_DEVICE_AND_INTERFACE_INFO(0x046d, 0xc11f, USB_CLASS_COMM,
 619                         USB_CDC_SUBCLASS_MDLM, USB_CDC_PROTO_NONE),
 620         .driver_info            = 0,
 621 },
 622
 623 /* Novatel USB551L and MC551 - handled by qmi_wwan */
 624 {
 625         USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0xB001, USB_CLASS_COMM,
 626                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 627         .driver_info = 0,
 628 },
 629
 630 /* Novatel E362 - handled by qmi_wwan */
 631 {
 632         USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9010, USB_CLASS_COMM,
 633                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 634         .driver_info = 0,
 635 },
 636
 637 /* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
 638 {
 639         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8195, USB_CLASS_COMM,
 640                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 641         .driver_info = 0,
 642 },
 643
 644 /* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
 645 {
 646         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8196, USB_CLASS_COMM,
 647                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 648         .driver_info = 0,
 649 },
 650
 651 /* Dell Wireless 5804 (Novatel E371) - handled by qmi_wwan */
 652 {
 653         USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x819b, USB_CLASS_COMM,
 654                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 655         .driver_info = 0,
 656 },
 657
 658 /* Novatel Expedite E371 - handled by qmi_wwan */
 659 {
 660         USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9011, USB_CLASS_COMM,
 661                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 662         .driver_info = 0,
 663 },
 664
 665 /* AnyDATA ADU960S - handled by qmi_wwan */
 666 {
 667         USB_DEVICE_AND_INTERFACE_INFO(0x16d5, 0x650a, USB_CLASS_COMM,
 668                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 669         .driver_info = 0,
 670 },
 671
 672 /* Huawei E1820 - handled by qmi_wwan */
 673 {
 674         USB_DEVICE_INTERFACE_NUMBER(HUAWEI_VENDOR_ID, 0x14ac, 1),
 675         .driver_info = 0,
 676 },
 677
 678 /* Realtek RTL8152 Based USB 2.0 Ethernet Adapters */
 679 {
 680         USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8152, USB_CLASS_COMM,
 681                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 682         .driver_info = 0,
 683 },
 684
 685 /* Realtek RTL8153 Based USB 3.0 Ethernet Adapters */
 686 {
 687         USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8153, USB_CLASS_COMM,
 688                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 689         .driver_info = 0,
 690 },
 691
 692 /* Samsung USB Ethernet Adapters */
 693 {
 694         USB_DEVICE_AND_INTERFACE_INFO(SAMSUNG_VENDOR_ID, 0xa101, USB_CLASS_COMM,
 695                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 696         .driver_info = 0,
 697 },
 698
 699 /* WHITELIST!!!
 700  *
 701  * CDC Ether uses two interfaces, not necessarily consecutive.
 702  * We match the main interface, ignoring the optional device
 703  * class so we could handle devices that aren't exclusively
 704  * CDC ether.
 705  *
 706  * NOTE:  this match must come AFTER entries blacklisting devices
 707  * because of bugs/quirks in a given product (like Zaurus, above).
 708  */
 709 {
 710         /* ZTE (Vodafone) K3805-Z */
 711         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1003, USB_CLASS_COMM,
 712                                       USB_CDC_SUBCLASS_ETHERNET,
 713                                       USB_CDC_PROTO_NONE),
 714         .driver_info = (unsigned long)&wwan_info,
 715 }, {
 716         /* ZTE (Vodafone) K3806-Z */
 717         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1015, USB_CLASS_COMM,
 718                                       USB_CDC_SUBCLASS_ETHERNET,
 719                                       USB_CDC_PROTO_NONE),
 720         .driver_info = (unsigned long)&wwan_info,
 721 }, {
 722         /* ZTE (Vodafone) K4510-Z */
 723         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1173, USB_CLASS_COMM,
 724                                       USB_CDC_SUBCLASS_ETHERNET,
 725                                       USB_CDC_PROTO_NONE),
 726         .driver_info = (unsigned long)&wwan_info,
 727 }, {
 728         /* ZTE (Vodafone) K3770-Z */
 729         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1177, USB_CLASS_COMM,
 730                                       USB_CDC_SUBCLASS_ETHERNET,
 731                                       USB_CDC_PROTO_NONE),
 732         .driver_info = (unsigned long)&wwan_info,
 733 }, {
 734         /* ZTE (Vodafone) K3772-Z */
 735         USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1181, USB_CLASS_COMM,
 736                                       USB_CDC_SUBCLASS_ETHERNET,
 737                                       USB_CDC_PROTO_NONE),
 738         .driver_info = (unsigned long)&wwan_info,
 739 }, {
 740         /* Telit modules */
 741         USB_VENDOR_AND_INTERFACE_INFO(0x1bc7, USB_CLASS_COMM,
 742                         USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 743         .driver_info = (kernel_ulong_t) &wwan_info,
 744 }, {
 745         USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
 746                         USB_CDC_PROTO_NONE),
 747         .driver_info = (unsigned long) &cdc_info,
 748 }, {
 749         USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM,
 750                         USB_CDC_PROTO_NONE),
 751         .driver_info = (unsigned long)&wwan_info,
 752
 753 }, {
 754         /* Various Huawei modems with a network port like the UMG1831 */
 755         USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_COMM,
 756                                       USB_CDC_SUBCLASS_ETHERNET, 255),
 757         .driver_info = (unsigned long)&wwan_info,
 758 },
 759         { },            /* END */
 760 };
 761 MODULE_DEVICE_TABLE(usb, products);
 762
 763 static struct usb_driver cdc_driver = {
 764         .name =         "cdc_ether",
 765         .id_table =     products,
 766         .probe =        usbnet_probe,
 767         .disconnect =   usbnet_disconnect,
 768         .suspend =      usbnet_suspend,
 769         .resume =       usbnet_resume,
 770         .reset_resume = usbnet_resume,
 771         .supports_autosuspend = 1,
 772         .disable_hub_initiated_lpm = 1,
 773 };
 774
 775 module_usb_driver(cdc_driver);
 776
 777 MODULE_AUTHOR("David Brownell");
 778 MODULE_DESCRIPTION("USB CDC Ethernet devices");
 779 MODULE_LICENSE("GPL");